Provided by: opengl-4-man-doc_1.0~svn33624-3_all 
NAME
textureProj - perform a texture lookup with projection
DECLARATION
gvec4 textureProj(gsampler1D sampler, vec2 P, [float bias]);
gvec4 textureProj(gsampler1D sampler, vec4 P, [float bias]);
gvec4 textureProj(gsampler2D sampler, vec3 P, [float bias]);
gvec4 textureProj(gsampler2D sampler, vec4 P, [float bias]);
gvec4 textureProj(gsampler3D sampler, vec4 P, [float bias]);
float textureProj(sampler1DShadow sampler, vec4 P, [float bias]);
float textureProj(sampler2DShadow sampler, vec4 P, [float bias]);
gvec4 textureProj(gsampler2DRect sampler, vec3 P);
gvec4 textureProj(gsampler2DRect sampler, vec4 P);
float textureProj(gsampler2DRectShadow sampler, vec4 P);
PARAMETERS
sampler
Specifies the sampler to which the texture from which texels will be retrieved is bound.
P
Specifies the texture coordinates at which texture will be sampled.
bias
Specifies an optional bias to be applied during level-of-detail computation.
DESCRIPTION
textureProj performs a texture lookup with projection. The texture coordinates consumed from P, not
including the last component of P, are divided by the last component of P. The resulting 3rd component of
P in the shadow forms is used as Dref. After these values are computed, the texture lookup proceeds as in
texture().
VERSION SUPPORT
┌─────────────────────────┬───────────────────────────────────────────────────────────────────────────────────┐
│ │ OpenGL Shading Language Version │
├─────────────────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
│Function │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
│Name │ │ │ │ │ │ │ │ │ │ │ │ │
├─────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
│textureProj │ - │ - │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
├─────────────────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
│textureProj │ - │ - │ - │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
│(gsampler2DRect{Shadow}) │ │ │ │ │ │ │ │ │ │ │ │ │
└─────────────────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘
SEE ALSO
texelFetch(), texelFetchOffset(), texture(), textureGather(), textureGatherOffset(),
textureGatherOffsets(), textureGrad(), textureGradOffset(), textureLod(), textureLodOffset(),
textureOffset(), textureProjGrad(), textureProjGradOffset(), textureProjLod(), textureProjLodOffset(),
textureProjOffset(), textureQueryLod(), textureSize()
COPYRIGHT
Copyright © 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions
set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.
COPYRIGHT
Copyright © 2011-2014 Khronos Group [FIXME: source] 11/18/2024 TEXTUREPROJ(3G)